LI Shi-rong,LI Wen-zhong,LI Fu-yuan,et al.Study on Evaluation of Afforestation Ecological Functions in Returning Farmland to Forest Project Area in Datong County of Qinghai Province[J].Research of Soil and Water Conservation,2006,13(03):252-254.
青海大通退耕还林生态功能综合评价
- Title:
- Study on Evaluation of Afforestation Ecological Functions in Returning Farmland to Forest Project Area in Datong County of Qinghai Province
- 分类号:
- X171.1
- 摘要:
- 根据生态经济学原理，采用层次分析法（AHP），建立了黄河上游退耕还林还草综合生态效益评价指标体系和数学模型.以青海大通县为例，对天然云杉林、退耕林地、天然荒草地、天然灌丛等植被类型进行综合生态效益评价，与农田生态系统进行对比研究.评价结果表明：天然云杉林、退耕林地、天然灌丛等类型的生态效益指数均大于农田生态系统，其综合生态效益指数排列顺序为，天然云杉林>退耕林地>天然灌丛>农地>天然荒草地.这一研究结果可为黄河上游退耕还林生态工程建设提供参考.
- Abstract:
- According to the theory of eco-economics, applying analytic hierarchy process (AHP) put forward the evaluation index system and evaluation model of compositive ecological benefit of returning farmland to forest in the upper reaches of the Yellow River.A case study is carried out in Datong county, Qinghai Province, and the compositive ecological benefits of returning farmland to forest in the vegetation types of the nature spruce forests, reuse farmland for woodland, nature wasteland and nature shrub and compared with the agro-ecosystems.The results show that the ecological benefit indexes of all the vegetation types, such as the nature spruce forests, reuse farmland for woodland, nature wasteland and nature shrub, are higher than that of the agro-ecosystems.The compositive ecological benefit indexes are in an order of nature spruce forests>reuse farmland for woodland>nature shrub>farmland>nature wasteland.The study results can be referred in the ecological regeneration of ecological project returning farmland to forest in the upper reaches of the Yellow River.
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备注/Memo
收稿日期:2005-6-28
基金项目:国家"十五"攻关课题项目（2001BA510B0102）
作者简介:李世荣（1975- ），男，博士生，研究方向：生态环境工程。
通讯作者:周心澄（1944- ），男，教授，主要研究方向：水土保持与荒漠化防治。